Hydrogen-Ion ConcentrationGastric Acidity DeterminationWaterAcid-Base EquilibriumHydrogen BondingCarbon DioxideBicarbonatesHydrogenHydrogen PeroxidePotassiumSodiumHydrogen SulfideWater SupplyProtonsCalciumBuffersAcidosisChloridesIonsIon ChannelsHydrochloric AcidKineticsAcidosis, RespiratoryOsmolar ConcentrationFresh WaterGastric JuiceMagnesiumMembrane PotentialsBody WaterAcetazolamideAcidosis, Renal TubularCell Membrane PermeabilityIon TransportAlkalosis, RespiratoryBiological Transport, ActivePartial PressureAmmonium ChlorideSecretory RateExtracellular SpaceTemperatureWater PurificationWater PollutionTime FactorsTurtlesPotassium ChlorideHelix (Snails)Sodium BicarbonateModels, BiologicalModels, ChemicalSodium ChlorideOxygenModels, MolecularMetalsElectrophysiologyCations, MonovalentPhosphatesWater Pollutants, ChemicalIon Channel GatingCationsAcidsWater PollutantsIon-Selective ElectrodesDogsHypercapniaLactatesElectric ConductivityAmilorideThermodynamicsCobaltSodium-Hydrogen AntiporterCations, DivalentGastric MucosaAequorinBinding SitesMolecular Sequence DataDinitrophenolsProtein ConformationPentagastrinSulfatesManganeseMathematicsMagnetic Resonance SpectroscopyWater-Electrolyte BalanceAbsorptionElectrochemistryIonophoresGastric AcidBiological TransportGramicidinQuaternary Ammonium CompoundsZincOxidation-ReductionSolutionsPermeabilityEndolymphChromiumLasalocidSeawaterElectrolytesBody Fluids